Electrolux Ergorapido Vacuum Battery Replacement

This video shows how to replace the battery of the Electrolux Ergorapido Vacuum. This step also applies to other Ergorapido series.
Problem Symptoms:
1. Low run time
2. Blinking LED
3. Auto-off
4. Not charging
Tools and parts required:
-Philips screwdriver
-Soldering Iron
-Battery Replacement (www.aliexpress...)
-Scotch Tape
-Googles ( to protect your eyes while soldering)
Disclaimer: Perform this repair at your own risk touching any internal parts can cause an electric shock

[@SuvdaV]

where do you get the replacement battery?

[@DBifix]

Check in the description above,I already provided the details.